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OpenGL2: Direct state access, part 1: Texture binds

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SmileTheory 2016-01-18 04:46:01 -08:00
parent 3089df0398
commit 275317fefb
16 changed files with 356 additions and 235 deletions
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132
code/renderergl2/tr_dsa.c Normal file
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/*
===========================================================================
Copyright (C) 2016 James Canete
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
===========================================================================
*/
#include "tr_local.h"
#include "tr_dsa.h"
static struct
{
GLuint textures[NUM_TEXTURE_BUNDLES];
GLenum texunit;
}
glDsaState;
void GL_BindNullTextures()
{
int i;
if (glRefConfig.directStateAccess)
{
for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
{
qglBindMultiTexture(GL_TEXTURE0_ARB + i, GL_TEXTURE_2D, 0);
glDsaState.textures[i] = 0;
}
}
else
{
for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
{
qglActiveTextureARB(GL_TEXTURE0_ARB + i);
qglBindTexture(GL_TEXTURE_2D, 0);
glDsaState.textures[i] = 0;
}
qglActiveTextureARB(GL_TEXTURE0_ARB);
glDsaState.texunit = GL_TEXTURE0_ARB;
}
}
void GL_BindMultiTexture(GLenum texunit, GLenum target, GLuint texture)
{
GLuint tmu = texunit - GL_TEXTURE0_ARB;
if (glDsaState.textures[tmu] == texture)
return;
qglBindMultiTexture(texunit, target, texture);
glDsaState.textures[tmu] = texture;
}
GLvoid APIENTRY GLDSA_BindMultiTexture(GLenum texunit, GLenum target, GLuint texture)
{
if (glDsaState.texunit != texunit)
{
qglActiveTextureARB(texunit);
glDsaState.texunit = texunit;
}
qglBindTexture(target, texture);
}
GLvoid APIENTRY GLDSA_TextureParameterf(GLuint texture, GLenum target, GLenum pname, GLfloat param)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglTexParameterf(target, pname, param);
}
GLvoid APIENTRY GLDSA_TextureParameteri(GLuint texture, GLenum target, GLenum pname, GLint param)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglTexParameteri(target, pname, param);
}
GLvoid APIENTRY GLDSA_TextureImage2D(GLuint texture, GLenum target, GLint level, GLint internalformat,
GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglTexImage2D(target, level, internalformat, width, height, border, format, type, pixels);
}
GLvoid APIENTRY GLDSA_TextureSubImage2D(GLuint texture, GLenum target, GLint level, GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
}
GLvoid APIENTRY GLDSA_CopyTextureImage2D(GLuint texture, GLenum target, GLint level, GLenum internalformat,
GLint x, GLint y, GLsizei width, GLsizei height, GLint border)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglCopyTexImage2D(target, level, internalformat, x, y, width, height, border);
}
GLvoid APIENTRY GLDSA_CompressedTextureImage2D(GLuint texture, GLenum target, GLint level, GLenum internalformat,
GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglCompressedTexImage2DARB(target, level, internalformat, width, height, border, imageSize, data);
}
GLvoid APIENTRY GLDSA_CompressedTextureSubImage2D(GLuint texture, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglCompressedTexSubImage2DARB(target, level, xoffset, yoffset, width, height, format, imageSize, data);
}
GLvoid APIENTRY GLDSA_GenerateTextureMipmap(GLuint texture, GLenum target)
{
GL_BindMultiTexture(glDsaState.texunit, target, texture);
qglGenerateMipmapEXT(target);
}